Home / 3,120.27-4,676.90-1,557.92

Finding the Fourth Proportional to 3,120.27, 4,676.90 and 1,557.92

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Solution

The fourth proportional to 3,120.27, 4,676.90 and 1,557.92 is: 2,335.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.27 : 4,676.90 = 1,557.92 : x
  2. Step 2: Convert to fraction form
    3,120.27/4,676.90 = 1,557.92/x
  3. Step 3: Cross multiply
    3,120.27x = 4,676.90 × 1,557.92
  4. Step 4: Simplify right side
    3,120.27x = 7,286,204.87
  5. Step 5: Solve for x
    x = 7,286,204.87/3,120.27
  6. Step 6: Final answer
    x = 2,335.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.